Computer scienceProgramming languagesJavaWorking with dataCollectionsCollection Implementations

Enumset

Theory

The correct set

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Assume you need to optimize the code where set is an instance of Set and contains elements from the Element enum. Which Java class in the java.util package is better to use with enums instead of HashSet? Choose the best implementation class and use it to initialize the set instance instead of HashSet.

Sample Input 1:

Sample Output 1: 

true
[FIRE, WIND, EARTH, SKY, WATER]
Write a program in Java 17
import java.util.*;

public class Main {

enum Element {
FIRE, WIND, EARTH, SKY, WATER
}

public static void main(String[] args) {

// Change this statement
Set<Element> set = new HashSet<>();

/** instanceof operator returns true if set object has EnumSet type
* and false - otherwise
*/
System.out.println(set instanceof EnumSet<Element>);
System.out.println(set);
}
}
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